Did you clean out the transmission cooler per Sun Valley's instructions? Seems like a good thing to do given the construction of the cooler with all those closely spaced pins which could trap debris and decrease cooler efficiency.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked